Demountable rim.



0. E. BAHRENBURG. DEMOUNTABLE RIM. M'Pucmon msn MAY u. lsu.

2 SHEETS-SMEET I.

lin/E17 0I' fxb Patented Oct. 9,1917.

@M ZT IIIHIMIIIM 0. E. BAHRENBURG.

DEMOUNTABLE RIM.

APPLICATION FILED MAY 8. |911.

1,242,310. `Patenmd oon 9,1917.

2 SHEETS-SHEET 2.

UNITED' sTATEs PATENT OFFICE.

OSCAR E. BAHRENBU'RG, OF MABIGQLD, CALIFORNIA."

DEMOU'NTABLE am.

Application filed May 8, 1917.

To at! `ui/ioni it may concern:

Be it known that l, Osorio E. BAHREN- mimi, a citizen of the United States, residing at Marigohl, in the county of Yuba and State of California, have invented a new and useful Improvement in Demountablfi Rims, of which the following is a full, clear, and exact description, such as will enable othcrs skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in demountahle rims wherein a pair of circumferential angles operate in conjunction with semi-circular channels to secure .i tire casing onto a vehicle wheel; and the objects ot' my invention are- First, to provide an imprmfed demountable rim for vehicle tires of the pneumatic or solid type; p t

Second7 to provide an improved device of the character described that may be easily and quickly; separated and rie-assembled;

Third, to provide an improved demountable rim having few .parts of simple and cheap construction adapted to rigidly engage and retain a tire casing onto a` Wheel; and

Fourth.r to provide an improved deviceof the character described wherein interchangeahie parts operate to provide a smooth continuous channel for the retention of a straight side or quick detachable tire.

I accomplish these several objects by means of the device disclosed in the drawings forming a part of the present specification wherein like characters of reference are used to designate similar parts throughout the said specification and drawings, and` in Which- Figure 1 is a front .elevation of my assembled device;

Fig. 2 is a sectional view taken on line 2-2 of Fig. 1 in the direction indicated;

Fig. 3 is an enlarged detailed `plan view of the locking cam removed from the device;

Fig.- 4 is an enlarged broken lan View of the lower portion of Fig. 1 dlsclosing the cam locked in a position to expand the semicircular channels onto the rims;

Fig. 5 is a similar viewdisclosing the cam released from the blocks of the channels;`

Fig. 6 is a similar view with the cam relmovedfrom its pin or pivotal member; and

Fig. 7 is a sectional vieu/taken on line 7-7 of Fig. 4 in the di recton indicated.

Specification of Letters Patent.

Patented Oct. 9; 191! '7 Serial No. 167,601.

Referring to the drawingsrheji linerallvl and the numeral 2 are used tg, designate. what l term a pair of circannfereiitiall;"dim vided sections or anglcsvhayin lfllfft,"n flanges 3 and 4 respectively on theiry ,'Oppl-f site sides whereby a continuous cl'niup be provided to engage and ,retainkiiliyfisiiiigp able type (,f quick detaohiilgil..olysiiti'iglti; Side tire casing, not shown. W, H 65 A pair of Se1ni-circular channelsl 5 aiidii. are provided to be expanded onto the 'circumferential sections'l and 2 to secure sai` (l sections l and 2 together to form a eintinu., ous channel. A block T is provided 'on rcifch 70` end of each channel (i and 6, the piiurpoi-geoi:l which will hereinafter be more tiilly set forth. 'l i t l I "i Each section 1 and 2 is providfdmwiftlra 1 pin VEl having a Harige 49 at the eiddfjtheliedgvg provided with diametrically' opposed Niang nels or slots 11 to permitethefpass'a'g diametrically opposedl .lugs ,12'extn`d'i within an aperture 14 of a-oarlnllG 4y'vl'iicll,"is A detachably and rotatablyP niiun'teduporithqSi pin 8. The cam 16`is. mountellujongvtlie pin 8 by passing the lugs"12gtlirpughx"te` slots 11 and then impartlngfapartia'liirn to the cam 16 until thelugs 12 threo'ri'i tf n under the flange 9 of said pinj.V I 85 The pins 8 are arranged. iwhen the septiidns l and 2 are properly assembled'inldia'mi'jt rically opposed positions `to en agie" circular apertures or recessesy rigcd' Within adjacent ends of 'the'.c'lia'l'lfnel" 6 as disclosed in Fig. 'Gdf'ttre'draviigs g i' purpose of which will hereinajterbe r fully described. A j

. AlinedA with the majorairis"oftliej y 16 and on the under sidethebTliave. i f- $5' vided opposed recessesflS,to "agf of springs`19 seated @recessed v i eircumferentialA section Wheijbyf 1 16 may be normally retainedlfnfff' i citing position. The cams 16 r'ese'dll T60 epressing Athe ends of the`spriii' Q 'tfi The cams 16 are also Oprovide," vvi 'h ries of apertures 21 t `be `eng`agedl5'y Spanner or other suitable wrench-"or tl'tfo operate the device. K "W1 .ffii-i The operation'isas ,foll'viisf'f'''" 5f-'y f I he clrcumferential' p 1 l End-"Emre placed ori the 4beads ofaf t. casixigndt shown, with the anges 'and 4 'ohioy posits orfarther 'sides to form ab'n'tiiiuou' chiami H0 nel. The circumferentia'l'siitiri lf'iid are securedcin this position by placing one semi-circular aperture or recess 17 on 'the ends of the semi-circular channels 5 and 6.

lchannels 5 and 6 in posi ion, the cain is attached and operated to further expand the channels 5 and 6 onto the sections 1 in the following manner.

Each cam 16 is rotatably mounted upon its respective pin 8 by passing the lugs 12 through the slots 11 of the {iange 9. The cam 16 Will then be in the position disclosed in Fig. 5 of the drawings.

By depressing the end of the spring and engaging the cam 16 through the medium of the apertures 21 therein with a suitable Spanner Wrench or other similar tool not shown, said cam 16 is rotated through an are of 90 degrees, the ends alined with the major axis of said cam 16 simultaneouslj7 engaging the blocks 7 on the adjacent ends of the semi-circular channels 5 and 6 and expanding the said channels more firmly onto the circumferential sections 1 and 2 to secure said rims 1 and 2 together.

AS the cam 16 reaches the position disclosed in Fig. 4 of the drawings, the end of the spring 19 will normally spring into and engage the recess 1S on the under side of the cam 16 and thereby7 normally lock said cam in operative position.

To demount a tire or casing the operation is reversed.

lIt is obvious from the foregoing that I have provided an improved de'mountahle rim adapted to securely retain a tire casing in a simple, easy and effective manner.

Having thus described my invention what i claim as new and desire to secure by Let- 1. A demoiintahle rim comprising a pai-r of circumferentially divided sections to engage a tire casing: a pair of semi-circular channels to engage the circumferential sections to secure the same together; a block secured to each end of each channel; and locking means secured to the circumferentially divided sections to engage adjacent blocks on adjacent ends of the channels and expand said channels cnt o the circun'ifcrentia-l sections.

2, A demoiintable 'rim comprising;r a pair of circnmfer'tutially divided sections to engage a tire casing; a pair of semi-circular channels to engage the circumferential sections to secure the same together; a block Vsecured to each end of each channel: locking` means secured. to the circunifcicntially divided sections to engage adjacent blocks 'on adjacent ends of the channels and extion.

3. A demount-.ible riin comprising a pair of circumferential sections to engage a tire casing; a pair of suini-circular channels to secure "the circumferential sections together; a block secured to each cud of each semi circular channel; and a cani pivotally mounted on each circiiinfcrential section at diameti'ically opposed positions to engage adjacent blocks on adjacent ends of the channels to expand said channels onto the circumferential sections 4. deniountahle rim comprising a pair of circiunfercntial sections to engage a tire casing', a pair of semi-circular channels to secure the circinnfereniial sections together; a hlock secured to cach end of cach scini circular channel; a cani pirotally mounted on each circumferential section at diametrically opposed positions to engage adjacent blocks on adjacent ends of the channels to expand said channels onto the circumferential sections; and meiins'for normally locking the cams in position when the channels are expanded.

5. A deinountahle rini comprising a pair of circumferentiallv divided sections to enY gage a tire casing; a pair of scinrcircular channels to secure the circumferential sections together; a block arranged on cach end of each channel; a pin secured to each circumferential section and at diainetrically` opposed positions; and a cam detacl'iahlv and rotatably mounted upon each pin to engage the blocks on adjacent ends of the channels and expand said channels onto the circin'nferential scrtioiis.

G. A deniountalilc rim ctmi'prisiug` a pair of circumferentially divided sections to engage a tire casing; a pair of semi-circular channels to secure the circumferential sec'- tions together: .a block arranged on each end ot' each channel; a pin secured to each circumferential section and at diametrically opposed positions; a cain detachably and rotatably mounted upon each pin to engage the blocks on adjacent ends of the channels and expand said channels onto the circum- :lci'ential sections; vand means for normally locking the cams in position when the channels are expanded into engaging relation with the circumferential sections.

In witness whereof I hereunto set my signature.

f oscar: n. BAHRENBURG. 

